7.3 UNAPPLIED SUPPLEMENTAL RENT:

 So long as no Default or Event of Default has then occurred and is
 continuing, on the Final Expiry Date Lessor shall pay to Lessee an
 amount equal to the Unused Supplemental Rent minus the Landing Gear
 Supplemental Rent. Should a Default or Event of Default have
 occurred and be then continuing, Lessor shall retain the amounts
 otherwise payable to Lessee under this Clause 7.3 until such time as
 such Default or Event of Default shall have ceased to exist
 whereupon it shall promptly pay to Lessee such amounts less any
 amount thereof applied in full or partial cure of such Default or
 Event of Default.

 7.4 MAINTENANCE CONTRIBUTIONS:

 (a) Provided no Default has occurred and is continuing, Lessor
 will pay (as a separate and independent obligation and not as
 a return of Supplemental Rent) the following amounts to the
 relevant Agreed Maintenance Performer (or to Lessee, shall
 Lessor have received evidence of payment of the relevant
 Agreed Maintenance Performer), up to the amount owing to it
 (with any remaining balance to be paid to Lessee), by way of
 contribution to the cost of maintenance of the Aircraft
 performed by any Agreed Maintenance Performer:

 (i) AIRFRAME: With respect to the Airframe, the completion,
 in accordance with this Agreement, of the Airframe
 6C/24,000 Hour Block Structural Check, an amount equal
 to the aggregate amount of the Airframe 6C/24,000 Hour
 Block Supplemental Rent actually paid by Lessee at the
 date such work starts less the aggregate amount
 previously paid by Lessor under this sub-clause;